ArticleVirchows Archiv : an international journal of pathology2020
Activation of the Akt/mammalian target of rapamycin pathway in combined hepatocellular carcinoma and cholangiocarcinoma: significant correlation between p-4E-BP1 expression in cholangiocarcinoma component and prognosis.
Article in Virchows Archiv : an international journal of pathology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 4 citations in OpenAlex.
- mTOR signaling in cholangiocarcinoma: mechanistic insights and therapeutic opportunities.Frontiers in pharmacology · 2026Review
- New insights into the pathophysiology and clinical care of rare primary liver cancers.JHEP reports : innovation in hepatology · 2021Review
- Article
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7 authors at 1 institution in 1 country.
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Abstract
The Akt/mammalian target of rapamycin (mTOR) pathway, which plays an important role in regulating cellular functions including proliferation, motility, and invasion, is known to be activated in many cancers. Combined hepatocellular carcinoma (HCC) and cholangiocarcinoma (CC) (cHCC-CC) has wide histological diversity characterized by relatively poor prognosis. Because of a lack of investigation into its molecular mechanisms, no effective systemic therapy is currently available for unresectable cHCC-CC tumors. Here, we retrospectively examined the clinicopathological and activation statuses of the Akt/mTOR pathway in 89 cases of cHCC-CC. Expression levels of molecular markers associated with this signaling pathway, including phosphatase and tensin homologue deleted on chromosome 10 (PTEN), phosphorylated Akt (p-Akt), p-mTOR, p-ribosomal protein S6 (p-S6RP), and p-eukaryotic translation initiation factor 4E (eIF4E)-binding protein 1 (p-4E-BP1), were measured by immunohistochemical staining. In addition, such activation in different cHCC-CC morphological categories was compared by dividing cases into those with HCC (n = 86), CC (n = 78), and intermediate components (n = 60). Comparison of prognosis among these groups revealed that p-4E-BP1 immunopositivity in cHCC-CC cases containing CC a component was a significant risk factor for poorer overall survival (P = 0.041). By evaluating factors in p-4E-BP1 expression in 78 cHCC-CC cases with a CC component, only lymph node metastasis was significantly correlated with positive immunostaining for p-4E-BP1 (P = 0.0222). In conclusion, p-4E-BP1 expression, especially in cHCC-CC cases with a CC component, was a notable Akt/mTOR pathway-related factor associated with poor prognosis. Assessing histological structure and p-4E-BP1 expression in cHCC-CC may be helpful for both predicting prognosis and using molecular targeted therapy.
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